ArticleCoDAS2026
Accuracy and cut-off values of different acoustic measures in the sustained vowel task of Brazilian Portuguese speakers.
Article in CoDAS, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo define cut-off values for acoustic measures extracted from the sustained vowel [a] task to discriminate between the presence and absence of vocal disorders in Brazilian Portuguese speakers.
methodsThe sample consisted of 376 participants, 288 female and 88 male, with a mean age of 41.20 ± 14.04 years. All individuals underwent a laryngological evaluation and a voice recording session, during which a sustained vowel [a] sample was collected. Subsequently both auditory-perceptual and acoustic analyses of the voice were performed. Among the participants 277 were classified as having a vocal disorder and 99 as having no vocal disorder. A total of 44 acoustic measures were extracted and analyzed using ROC curves to determine the cut-off value for each measure, along with their performance metrics (sensitivity, specificity and AUC).
resultsCut-off values were established for 23 of the 44 extracted acoustic measures. Six measures showed robust and clinically relevant performance in discriminating between voices with and without vocal disorders in Brazilian Portuguese speakers. The measures with AUC values greater than 0.70 and balanced sensitivity and specificity above 70% were: Amplitude Variability Index (AVI) (≤0,91), Glottal-to-noise excitation (GNE)2000Hz (>0,92), Spectral Noise Level (SNL)100-2600Hz (≤7,71), SNL100-3000Hz (≤3,38), SNL100-8000Hz (≤10,95) and SNL5100-8000Hz (≤-1,84).
conclusionSix acoustic measures demonstrated satisfactory performance in identifying the presence of vocal disorders in Brazilian Portuguese speakers. Ten measures showed good performance for voice screening purposes and seven for diagnostic confirmation of vocal disorders.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.